I remember watching a tv series back in 2008-2009 where theres a group of young girls and boys. They fight monster that come to the city and that comes in their way. I kinda remember the name as Monster Warriors , but I can't find the tv series. I remember there was an episode of it where there comes a giant worm inside a mall and these guys fight it.
Not sure if it was a movie though, but I lean more on the tv series side.